Events that occurred on 4 December.
On Earth
- 1944 - J.R.R. Tolkien writes letter 91b.
- 1947 - Essays Presented to Charles Williams, including "On Fairy-Stories", is published.
- 1953 - An issue of the magazine Radio Times featuring an article by J.R.R. Tolkien, is published.
- 1955 - The fourth episode of 1955 radio series of The Fellowship of the Ring airs on the BBC Third Programme.
- 1963 - J.R.R. Tolkien writes a letter to a Miss Clark.
- 1967 - J.R.R. Tolkien writes a letter to Roger Verhulst.
- 1999 - Voice actress Gaia Wise is born.
- 2001 - The documentary Master of the Rings is released.
- 2004 - The Lord of the Rings Symphony plays in Newark, New Jersey.
- 2012 - Guardians of Middle-earth is released on PlayStation 3 and Xbox 360.
- 2014 - JRR Tolkien, le seigneur des écrivains (La Grande Librairie) is aired.